package gateway.filter;

import com.heima.utils.common.AppJwtUtil;
import io.jsonwebtoken.Claims;
import org.apache.commons.lang3.StringUtils;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

@Component
public class MyAuthFilter implements GlobalFilter, Ordered {

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();

        if(request.getURI().getPath().contains("/login/login_auth")){
            return chain.filter(exchange);
        }

        String token = request.getHeaders().getFirst("token");

        if(StringUtils.isBlank(token)){
            response.setStatusCode(HttpStatus.UNAUTHORIZED);
            return response.setComplete();
        }

        try {

            Claims claimsBody = AppJwtUtil.getClaimsBody(token);
            int i = AppJwtUtil.verifyToken(claimsBody);
            if(i==1 || i == 2){
                response.setStatusCode(HttpStatus.UNAUTHORIZED);
                return response.setComplete();
            }
        }catch (Exception e ){
            response.setStatusCode(HttpStatus.UNAUTHORIZED);
            return response.setComplete();
        }




        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return 0;
    }
}
